A graphicsmagick security update has been released for Debian GNU/Linux 9 LTS to address an issue that results in a heap buffer overwrite when magnifying MNG images.

DLA 2902-1: graphicsmagick security update

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Debian LTS Advisory DLA-2902-1 debian-lts@lists.debian.org
  https://www.debian.org/lts/security/ Thorsten Alteholz
January 27, 2022   https://wiki.debian.org/LTS
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Package : graphicsmagick
Version : 1.3.30+hg15796-1~deb9u5
CVE ID : CVE-2020-12672

An issue has been found in graphicsmagick, a collection of image
processing tools, that results in a heap buffer overwrite when
magnifying MNG images.

For Debian 9 stretch, this problem has been fixed in version
1.3.30+hg15796-1~deb9u5.

We recommend that you upgrade your graphicsmagick packages.

For the detailed security status of graphicsmagick please refer to
its security tracker page at:
  https://security-tracker.debian.org/tracker/graphicsmagick

Further information about Debian LTS security advisories, how to apply
these updates to your system and frequently asked questions can be
found at:   https://wiki.debian.org/LTS